Skip to main content
Submitted by Dr S. Patel on 28 November 2021

If you have diabetes, your chances of getting an infection are higher than a person without diabetes. Having a cold, flu, COVID-19 or any other infection can then cause your blood glucose levels to increase. Thus, knowing how to handle such days and being prepared can prevent distress and complications that can occur due to hypergylcemia or high glucose levels in blood.

What happens when you fall sick?

When the body is unwell due to an infection or allergy, the immune system gets activated and certain hormones are released to help fight the ailment. These hormones however raise the blood glucose levels in spite of the presence of insulin in the body. Thus, persons with diabetes are at a risk of raised glucose levels even with minor ailments like a cold or flu. This can lead to a state of diabetic ketoacidosis (where the glucose converts fat into ketones) which can be life-threatening.

Illness likely to affect your blood sugar levels

Illness such as infections, cardiovascular events, dehydration or electrolyte imbalance can all lead to fluctuation in the blood glucose levels. Some of the common infections known to affect Persons with Diabetes include:

  • Common cold, flu, sore throat.
  • Respiratory infections like Covid-19, Bronchitis etc.
  • Gastrointestinal problems like food poisoning, upset stomachs, vomiting, diarrhea etc.
  • Skin infections like rash, abscesses etc.
  • UTIs and bladder infections

Related Reading: Medicines that alter blood glucose levels

How to be prepared?

Watch out for symptoms/ signs of any illness. Fever is always a clear sign of infection.

Speak to your Care team beforehand and discuss what your blood glucose levels should be in the event of an illness. Discuss new targets, how to adjust medications, when and how often to monitor glucose & ketone levels and when to call the doctor during a sick day.

Keep a thermometer, glucometer and BP machine at home for easy monitoring.

Keep a few over-the-counter pain and fever reducing pills which can be taken immediately when prescribed by your doctor.

Educate your family members about your list of medications and signs of hypergylcemia.

Keep a list of your doctors and local pharmacists and their contact numbers handy(on your fridge, phone or room).

What to do on a sick day?

  • Do not skip on your diabetes medications including insulin. Take them on time as you would on any day even if you are not eating and drinking like normal.
  • Use a glucometer to check your blood glucose levels 4 times a day. Keep a log of your recorded levels to show your doctor.
  • Drink plenty of fluids to avoid dehydration. A cup of water every hour is a good measure of fluid. Avoid tea, coffee and sodas that are high in calories and caffeine. Opt for water, soups and plain yogurt drinks.
  • Try to eat normal meals. If you are unable to eat normally or have nausea/vomiting, then have some sugary drinks to prevent drop in sugar levels. However, make sure you monitor the intake of the sugar in these drinks.
  • To prevent hypoglycemia (low glucose levels) when you are unable to eat regular meals, instead try having have some light snacks like dry toasts, crackers, parathas/roti, or biscuits.
  • Weigh yourself everyday because unwanted weight loss is a sign of high blood glucose.
  • Check your temperature for fever frequently. It is an indication of infection.
  • Watch your blood pressure levels. Blood pressure may decrease if there is less fluid intake and dehydration.

When to seek medical attention?

  • Call your doctor and inform him about your symptoms and blood glucose levels so he/she can advise you on how to take care of it and if you need to come in for physical check-up.
  • If you are having frequent vomiting or diarrhea (more than 3 times a day)as this can quickly cause dehydration in the body. Ask your doctor if any medicines need to be altered.
  • If your blood glucose levels are above 240 mg/dl even after taking your medications on time.
  • If you have unresolving or high fever (above 103.5F).
  • If you are having difficulty breathing, dizziness, confusion or severe pain.
  • Persons with diabetes and their care providers should be aware of Diabetic Ketoacidosis so that you can seek immediate medical attention if any of the signs or symptoms are present. These include:
    • Blood glucose levels above 270 mg/dl
    • Presence of ketone in urine while doing a home ketone test
    • Excessive thirst
    • Increase in heart rate
    • Fruity smelling breath

Read this: What to do when your blood sugar falls

Note: Remember not to stop your medications for Diabetes on your own. Check with your doctor and follow your doctor’s advice on any changes in your doses.

People with Type 1 Diabetes must keep a close eye on their insulin levels and follow insulin adjustment protocol as prescribed by their doctor.

Community
Condition

Stories

  • Artificial sweeteners may promote diabetes, claim scientists
    Artificial sweeteners may contribute to soaring levels of diabetes, according to a controversial study that suggests the additives could exacerbate the problem they are meant to tackle. Researchers in Israel found that artificial sweeteners used in diet drinks and other foods can disrupt healthy microbes that live in the gut, leading to higher blood sugar levels – an early sign of diabetes. But the study has left many experts unconvinced. The findings draw largely on tests of just one sweetener…
  • A woman holding up the pregnancy test kit
    Pre-conception Care For A Healthy Pregnancy
    Planning a pregnancy? Obstetrician and gynaecologist Dr Chandan Dubey tells you what you need to do before you conceive. A woman’s good health prior to and during pregnancy is vital for optimal outcomes for her and the baby. You should consult a general physician or gynaecologist for preconception care and counselling. In the meantime, here’s what you should be aware of:  Lose weight (if you are overweight): Obesity is a serious problem in pregnancy. It increases the…
  • FDA approves weight-management drug Contrave
    The U.S. Food and Drug Administration today approved Contrave (naltrexone hydrochloride and bupropion hydrochloride extended-release tablets) as treatment option for chronic weight management in addition to a reduced-calorie diet and physical activity. The drug is approved for use in adults with a body mass index (BMI) of 30 or greater (obesity) or adults with a BMI of 27 or greater (overweight) who have at least one weight-related condition such as high blood pressure (hypertension), type 2…
  • Neighbourhoods That Encourage Walking Reduce Obesity and Diabetes
    People who live in neighborhoods that are conducive to walking experienced a substantially lower rate of obesity, overweight and diabetes than those who lived in more auto-dependent neighborhoods, according to a pair of studies presented at the American Diabetes Association's 74th Scientific Sessions. http://www.diabetescare.net/article/title/neighborboods-that-encourage-walking-reduce-obesity-and-diabetes   Those who read this, also read one of our contributor's journey as a diabetic for…
  • Highest number of diabetes-linked TB cases (302,000) in India, says Lancet
    Diabetes is making an increasingly important contribution to the TB epidemic and a 52% increase in diabetes prevalence recorded over the last 3 years in the 22 highest TB burden countries is thought to be responsible for a rise in diabetes-associated TB cases from 10% in 2010 to 15% in 2013,” says the Lancet study to be published in the medical journal this week. Read more here  Diabetes has long been known to be a risk factor for active tuberculosis and reactivation of latent tuberculosis…
  • Healthy Foods and Treats in Singapore
    Juliana Lim has had Type II diabetes for 27 years. Here, she shares her diabetes and cholesterol friendly secrets and her little treats. She is a committee member of Diabetic Society of Singapore and represents the Diabetic Support Group.  Food - Try to include the following in your daily diet: 1. Small black fungus -These are easily available in supermarkets and can definitely help to manage your blood sugar. 2. Ladies fingers (Okra) - Try to get the fresher ones.…
  • Research Tie up for Diabetes Nephropathy
    AstraZeneca and Mitsubishi Tanabe Pharma said on Wednesday they said signed a three-year research collaboration into diabetic nephropathy, or kidney failure due to diabetes. http://news.yahoo.com/astrazeneca-mitsubishi-tanabe-diabetes-research-064428458--finance.html
  • The Sweet Truth
    All you need to know about artificial sweeteners and sugar-free treats. By Dr Gita Mathai, a paediatrician and family practitioner.  Food is enjoyed if it looks, smells and tastes good. It needs to provide an appetising blend of salt, sugar, bitters, sourness and spice. The first three in excess are “injurious to health”, and, of these, sugar is considered the greatest villain of all. It is purported to be singlehandedly responsible for the global epidemic of…
  • What your body may be trying to tell you
    Abnormally dry skin? Change in hair colour or shape of your nails? Even simple changes in the body may signify an underlying problem that you need to get checked out. By Dr Gita Mathai, paediatrician and family practitioner, shares tips to help you stay vigilant. The Skin should be a healthy colour.  • If it turns yellow, you may have jaundice.  • If it looks pale, get checked for anaemia. Here's how to manage iron-deficient anaemia. • Excessively cracked and…
  • Number of diabetic women on the rise
    "In Tamil Nadu, it was found that 2,66,661 women above the age of 30 years were diabetic,," the health minister said. Terming diabetes as a killer disease, he recommended that people should exercise more regularly. http://timesofindia.indiatimes.com/City/Trichy/Number-of-women-affected-by-diabetes-on-the-rise/articleshow/38768515.cms